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All results from a given calculation for CH3CHCH3 (Isopropyl radical)

using model chemistry: PBE1PBE/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 2A
Energy calculated at PBE1PBE/STO-3G
 hartrees
Energy at 0K-116.918222
Energy at 298.15K-116.924301
HF Energy-116.918222
Nuclear repulsion energy74.671198
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at PBE1PBE/STO-3G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3524 3109 1.64      
2 A' 3492 3080 1.72      
3 A' 3472 3062 1.99      
4 A' 3322 2931 0.95      
5 A' 1698 1498 4.48      
6 A' 1687 1488 8.89      
7 A' 1594 1406 2.65      
8 A' 1289 1137 9.67      
9 A' 1145 1010 2.99      
10 A' 958 845 1.15      
11 A' 453 400 8.61      
12 A' 367 324 4.09      
13 A' 131 115 0.15      
14 A" 3522 3106 0.19      
15 A" 3472 3062 0.18      
16 A" 3322 2930 2.50      
17 A" 1694 1495 0.43      
18 A" 1682 1484 0.14      
19 A" 1586 1399 5.11      
20 A" 1510 1332 13.35      
21 A" 1247 1100 0.01      
22 A" 1051 927 0.01      
23 A" 1026 905 1.56      
24 A" 110 97 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 21676.0 cm-1
Scaled (by 0.8821) Zero Point Vibrational Energy (zpe) 19120.4 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at PBE1PBE/STO-3G
ABC
1.22821 0.27106 0.24284

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.015 0.544 0.000
C2 -0.015 -0.203 1.315
C3 -0.015 -0.203 -1.315
H4 0.347 1.579 0.000
H5 -0.702 -1.060 1.279
H6 -0.702 -1.060 -1.279
H7 0.986 -0.597 1.562
H8 -0.322 0.453 2.141
H9 0.986 -0.597 -1.562
H10 -0.322 0.453 -2.141

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8 H9 H10
C11.51221.51221.09612.16382.16382.17832.16482.17832.1648
C21.51222.62952.24361.09912.81721.10421.09863.07143.5309
C31.51222.62952.24362.81721.09913.07143.53091.10421.0986
H41.09612.24362.24363.11453.11452.75352.50962.75352.5096
H52.16381.09912.81723.11452.55891.77361.78233.33763.7595
H62.16382.81721.09913.11452.55893.33763.75951.77361.7823
H72.17831.10423.07142.75351.77363.33761.77443.12404.0652
H82.16481.09863.53092.50961.78233.75951.77444.06524.2822
H92.17833.07141.10422.75353.33761.77363.12404.06521.7744
H102.16483.53091.09862.50963.75951.78234.06524.28221.7744

picture of Isopropyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.933 C1 C2 H7 111.777
C1 C2 H8 111.036 C1 C3 H6 110.933
C1 C3 H9 111.777 C1 C3 H10 111.036
C2 C1 C3 120.787 C2 C1 H4 117.792
C3 C1 H4 117.792 H5 C2 H7 107.216
H5 C2 H8 108.381 H6 C3 H9 107.216
H6 C3 H10 108.381 H7 C2 H8 107.316
H9 C3 H10 107.316
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.052      
2 C -0.248      
3 C -0.248      
4 H 0.062      
5 H 0.081      
6 H 0.081      
7 H 0.080      
8 H 0.082      
9 H 0.080      
10 H 0.082      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.173 -0.143 0.000 0.225
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.457 0.238 0.000
y 0.238 -19.009 0.000
z 0.000 0.000 -18.947
Traceless
 xyz
x -0.479 0.238 0.000
y 0.238 0.193 0.000
z 0.000 0.000 0.286
Polar
3z2-r20.572
x2-y2-0.448
xy0.238
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.849 0.094 0.000
y 0.094 2.358 0.000
z 0.000 0.000 2.749


<r2> (average value of r2) Å2
<r2> 61.414
(<r2>)1/2 7.837